<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="头像" />
      </div>
      <!-- 登录表单 -->
      <el-form
        :rules="loginFormRules"
        label-width="0"
        class="login_form"
        :model="loginForm"
        ref="loginFormRef"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            prefix-icon="iconfont icon-denglu"
            placeholder="请输入账号"
            v-model="loginForm.username"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="iconfont icon-mimadenglu"
            placeholder="请输入密码"
            type="password"
            v-model="loginForm.password"
          ></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 登录表单数据对象
      loginForm: {
        username: "admin",
        password: "123456",
      },
      // 登录的表单验证
      loginFormRules: {
        //验证用户名
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          { min: 3, max: 10, message: "长度在 3 ~ 10之间", trigger: "blur" },
        ],
        // 验证密码
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 15, message: "长度在3 ~ 15之间", trigger: "blur" },
        ],
      },
    };
  },
  methods:{
      resetLoginForm(){
          this.$refs.loginFormRef.resetFields();
      },
      login(){
          this.$refs.loginFormRef.validate(async valid=>{
            //   valid是表单通过验证标志
            if(!valid) return;
            const {data:res} = await this.$http.post('login',this.loginForm)
            // console.log(res)
            if(res.meta.status !== 200) return this.$message.error(`登陆失败！ ${res.meta.msg}`);
            this.$message.success('登陆成功')
            //  保存taken到sessionStorage
            // console.log(res)
            window.sessionStorage.setItem("token",res.data.token);
            //  通过编程导航跳转到后台主页，路由地址是 /home
            this.$router.push('/home')
          }); 
      }
  }
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.btns {
  display: flex;
  justify-content: flex-end;
}

.login_form {
  position: absolute;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
  bottom: 0;
}
</style>